- Star Trek: The Motion Picture
- Star Trek II: The Wrath of Khan
- Star Trek III: The Search for Spock
- Star Trek IV: The Voyage Home
- Star Trek V: The Final Frontier
- Star Trek VI: The Undiscovered Country
- Star Trek Generations
A beautiful Class M planet oribiting Beta Cassius whose restful, peaceful ambiance is reputed to have recuperative and therapeutic powers; without forces of its own, it looks to the UFP for defense by treaty. A band of Tarellians looking for medical cures arrive there at the same time Deanna Troi's mother and the family of her intended rendezvous there to board the U.S.S. Enterprise NCC-1701-D for the wedding in 2364.